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Water and Wastewater Plant Directory
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Halifax, Nova Scotia, Canada
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Mill Cove WPCC
Halifax Regional Municipality
P.O. Box 1749
Halifax, Nova Scotia, B3J 3A5
Canada
Contact Information:
Contact: R. Reid
Email:
reidr@region.halifax.ns.ca
Telephone: 902-490-4000
Fax:
Plant Operation: Municipal
Processing: Wastewater
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Web site:
http://www.region.halifax.ns.ca/Works/wwt/millcove.html
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Plant/Process Description:
Constructed in 1969 and began operations in 1970
to serve the communities of Bedford-Sackville.
The original design capacity was 2.5 million
gallons per day and increased to 5.0 mgpd
following an expansion in 1981. This secondary
treatment process consisted of preliminary
treatment, primary settling, activated sludge
(biological) treatment, secondary settling, and
post chlorination. Biosolids are treated and
stabilized on site by means of anaerobic
digestion.
In the early 1990's, due to rapid growth in the
Bedford-Sackville area, plans were initiated to
again expand and modify the Mill Cove WPCP. In
1994, Porter Dillon Ltd. was retained to provide
the engineering design services along with the
selection of McAlpine (Atlantic) as construction
manager of the project. A partnering team
consisting of representatives from Porter Dillon,
McAlpine, and Halifax Regional Municipality
collaborated on an ongoing basis in order to
fulfill the goals of the project. This expansion
enables the plant to treat an average daily flow
of 7.5 mgpd and peak flows of 16.5 mgpd, and was
completed by April 1, 1997 at a total cost of $20
million dollars. The Mill Cove WPCP is the
largest municipal secondary treatment facility in
Atlantic Canada.
The new expansion design incorporates a number of
modifications and specific objectives:
Due to limited availability of land, a pure
oxygen activated sludge process replaces the
former conventional A.S. process.
A surge/flow equalization tank located under an
adjacent parking lot allows storm and peak flows
to be retained and pumped to the treatment
process during off peak hours. Direct by-passing
to Bedford Basin without treatment will not take
place.
Advanced ultra violet light technology replaces
the use of chlorine for disinfection purposes.
A high level of odour control is achieved by
covering primary and pure oxygen process stages
and the addition of a two stage (wet
phase/activated carbon) air scrubbing system
located in the headworks complex.
Building architecture and landscaping design
ensures a high degree of compatibility with the
surrounding residential and commercial
development.
A computerized process control system(PLC based)
with Trihedral VTS software provides for
optimized operations and precise process
monitoring.
Preservation of the Bedford Basin/Halifax Harbour
ecosystem.
The new process design consists of flow
equalization, primary clarification, pure oxygen
activated sludge biological treatment, secondary
clarification and ultra violet light
disinfection. The plant exceeds NSDOEandL
effluent guidelines of 30mg/L BOD and 30mg/L S.S.
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Owner:
Halifax Regional Municipality
Web site:
http://www.region.halifax.ns.ca/
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Operating Company:
Halifax Regional Municipality
Web site:
http://www.region.halifax.ns.ca/
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Disclaimer:
Water and Wastewater.com provides the information on
this page for reference purposes only. We do not certify
the accuracy of the information provided by third-party
individuals for this listing.
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